/Engine/Plugins/Experimental/UserToolBoxCore/Source/UserToolBoxCore/Public/UTBBaseTab.h
Function to generate the raw widget of the tab. you may consider using theSUserToolBoxTabWidgetinstead if you want to register your different commands to the input manager etc..
[TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [SWidget](API\Runtime\SlateCore\Widgets\SWidget) > GenerateUI()